Physics: Principles with Applications

6th Edition

ISBN: 9780130606204

Author: Douglas C. Giancoli

Publisher: Prentice Hall

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Question

Chapter 2, Problem 56P

(a)

To determine

To identify: Whether the object is moving in positive or negative direction for segment A to B.

(a)

Expert Solution

Answer to Problem 56P

The object is moving in the negative direction.

Explanation of Solution

Introduction:

Consider the given graph as shown below.

Physics: Principles with Applications, Chapter 2, Problem 56P , additional homework tip 1

For the segment A to B, object is moving constantly and then distance decreases rapidly with time.

In the graph segment A-B, the object is moving in a negative direction as the slope of the line segment is decreasing over time.

Conclusion:

The object would be moving in the negative direction.

(b)

To determine

To identify: Whether the object is speeding up or slowing down in graph for segment A to B.

(b)

Expert Solution

Answer to Problem 56P

The object is speeding up.

Explanation of Solution

Introduction:

Consider the given graph as shown below.

Physics: Principles with Applications, Chapter 2, Problem 56P , additional homework tip 2

For the segment A to B, object is moving constantly and then distance decreases rapidly with time.

In the segment A to B, the object is moving from a less steep position to steeper one, this suggests that the object is speeding up.

Conclusion:

The object is speeding up.

(c)

To determine

To identify: Whether the acceleration of an object is positive or negative for segment A to B.

(c)

Expert Solution

Answer to Problem 56P

The acceleration of the object is negative.

Explanation of Solution

Introduction:

Consider the given graph as shown below.

Physics: Principles with Applications, Chapter 2, Problem 56P , additional homework tip 3

For the segment A to B, object is moving constantly and then distance decreases rapidly with time.

During the interval of A to B, the graph is going concave downward i.e. slope is going more negative. Thus, the acceleration is negative.

Conclusion:

The acceleration of the object is negative.

(d)

To determine

To identify: Whether the object is moving in positive or negative direction for segment D to E.

(d)

Expert Solution

Answer to Problem 56P

The object would be moving in a positive direction.

Explanation of Solution

Introduction:

Consider the given graph as shown below.

Physics: Principles with Applications, Chapter 2, Problem 56P , additional homework tip 4

For the segment A to B, object is moving constantly and then distance decreases rapidly with time.

For the segment D to E, object’s distance increases with time then the objects moves faster.

In the graph segment D-E, the object is moving in a positive direction as the slope of the line segment is increasing.

Conclusion:

The object would be moving in a positive direction.

(e)

To determine

To identify: Whether the object is speeding up or slowing down for segment D to E.

(e)

Expert Solution

Answer to Problem 56P

The object is speeding up.

Explanation of Solution

Introduction:

Consider the given graph as shown below.

Physics: Principles with Applications, Chapter 2, Problem 56P , additional homework tip 5

For the segment A to B, object is moving constantly and then distance decreases rapidly with time.

For the segment D to E, object’s distance increases with time then the objects moves faster.

The object is moving on the graph from a less steep position to steeper that is slope is increasing with time.This suggests that the object is speeding up.

Conclusion:

The object is speeding up.

(f)

To determine

To identify: Whether the acceleration of an object is positive or negative in the graph segment D to E.

(f)

Expert Solution

Answer to Problem 56P

The object will accelerate.

Explanation of Solution

Introduction:

Consider the given graph as shown below.

Physics: Principles with Applications, Chapter 2, Problem 56P , additional homework tip 6

For the segment A to B, object is moving constantly and then distance decreases rapidly with time.For the segment D to E, object’s distance increases with time then the objects moves faster.

During the interval D to E, the graph is going concave upward i.e. slope is going more positive. Thus, the acceleration is positive.

Conclusion:

The object will accelerate.

(g)

To determine

To identify: Whether the object moving in the positive or negative direction in the graph segment C to D.

(g)

Expert Solution

Answer to Problem 56P

The object is not moving in either direction. The object is at rest.

Explanation of Solution

Introduction:

Consider the given graph as shown below.

Physics: Principles with Applications, Chapter 2, Problem 56P , additional homework tip 7

For the segment A to B, object is moving constantly and then distance decreases rapidly with time.

For the segment C to D, the object’s distance is constant with time then object remains stationary.

After reading the graph segment C-D, the object is not moving in either direction. Thus, the distance graph is linearly constant.

Conclusion:

The distance between duration of graph segment C-D is constant. Thus, the object will remain at rest.

(h)

To determine

To identify: Whether the object speeding up or slowing down in graph segment C to D.

(h)

Expert Solution

Answer to Problem 56P

The object is not moving in either direction. The object is at rest.

Explanation of Solution

Introduction:

Consider the given graph as shown below.

Physics: Principles with Applications, Chapter 2, Problem 56P , additional homework tip 8

For the segment A to B, object is moving constantly and then distance decreases rapidly with time.

For the segment C to D, the object’s distance is constant with time then object remains stationary.

After reading the graph segment C-D, the object is not moving in either direction. Thus, the velocity of the object is zero.

Conclusion:

The velocity of the object is zero that is the object is at rest.

(i)

To determine

To identify: Whether the acceleration of the object positive or negative in the graph segment C to D.

(i)

Expert Solution

Answer to Problem 56P

The object is not moving in either direction. So, the acceleration is zero.

Explanation of Solution

Introduction:

Consider the given graph as shown below.

Physics: Principles with Applications, Chapter 2, Problem 56P , additional homework tip 9

For the segment A to B, object is moving constantly and then distance decreases rapidly with time.For the segment C to D, the object’s distance is constant with time then object remains stationary.

After reading the graph segment C-D, the object is not moving in either direction. Thus, the acceleration is zero.

Conclusion:

The object is not moving in either direction. So, the acceleration is zero.

Chapter 2, Problem 55P

Chapter 2, Problem 57GP

Chapter 2 Solutions

Physics: Principles with Applications

Ch. 2 - Does a car speedometer measure speed, velocity, or...Ch. 2 - Prob. 2Q Ch. 2 - When an constant velocity, does its during any...Ch. 2 - Prob. 4Q Ch. 2 - Prob. 5Q Ch. 2 - Prob. 6Q Ch. 2 - Prob. 7Q Ch. 2 - Prob. 8Q Ch. 2 - Give an example where both the velocity and...Ch. 2 - Two cars emerge side by side from a tunnel. Car A...

Ch. 2 - Can an object be increasing in speed as its...Ch. 2 - A baseball player hits a ball straight up into the...Ch. 2 - As a freely falling object speeds up, what is...Ch. 2 - Prob. 14Q Ch. 2 - You travel from point A to point B in a car moving...Ch. 2 - Prob. 16Q Ch. 2 - Prob. 17Q Ch. 2 - Prob. 18Q Ch. 2 - Prob. 19Q Ch. 2 - Prob. 20Q Ch. 2 - Describe in words the motion plotted in Fig. 2-32...Ch. 2 - Describe in words the motion of the object graphed...Ch. 2 - Prob. 1P Ch. 2 - Prob. 2P Ch. 2 - Prob. 3P Ch. 2 - Prob. 4P Ch. 2 - Prob. 5P Ch. 2 - Prob. 6P Ch. 2 - Prob. 7P Ch. 2 - Prob. 8P Ch. 2 - Prob. 9P Ch. 2 - Prob. 10P Ch. 2 - Prob. 11P Ch. 2 - Prob. 12P Ch. 2 - Prob. 13P Ch. 2 - Prob. 14P Ch. 2 - Prob. 15P Ch. 2 - A sports car accelerates from rest to 95 km/h in...Ch. 2 - Prob. 17P Ch. 2 - Prob. 18P Ch. 2 - 19.(II) A sports car moving at constant velocity...Ch. 2 - Prob. 20P Ch. 2 - Prob. 21P Ch. 2 - Prob. 22P Ch. 2 - Prob. 23P Ch. 2 - Prob. 24P Ch. 2 - Prob. 25P Ch. 2 - Prob. 26P Ch. 2 - Prob. 27P Ch. 2 - Prob. 28P Ch. 2 - Prob. 29P Ch. 2 - Prob. 30P Ch. 2 - Prob. 31P Ch. 2 - Prob. 32P Ch. 2 - Prob. 33P Ch. 2 - Prob. 34P Ch. 2 - Prob. 35P Ch. 2 - Prob. 36P Ch. 2 - Prob. 37P Ch. 2 - Prob. 38P Ch. 2 - Prob. 39P Ch. 2 - Prob. 40P Ch. 2 - Prob. 41P Ch. 2 - Prob. 42P Ch. 2 - Prob. 43P Ch. 2 - Prob. 44P Ch. 2 - Prob. 45P Ch. 2 - Prob. 46P Ch. 2 - Prob. 47P Ch. 2 - Prob. 48P Ch. 2 - Prob. 49P Ch. 2 - Prob. 50P Ch. 2 - Prob. 51P Ch. 2 - Prob. 52P Ch. 2 - Prob. 53P Ch. 2 - Prob. 54P Ch. 2 - Prob. 55P Ch. 2 - Prob. 56P Ch. 2 - Prob. 57GP Ch. 2 - Prob. 58GP Ch. 2 - Prob. 59GP Ch. 2 - Prob. 60GP Ch. 2 - Prob. 61GP Ch. 2 - Prob. 62GP Ch. 2 - Prob. 63GP Ch. 2 - Prob. 64GP Ch. 2 - Prob. 65GP Ch. 2 - Prob. 66GP Ch. 2 - Prob. 67GP Ch. 2 - Prob. 68GP Ch. 2 - Prob. 69GP Ch. 2 - Prob. 70GP Ch. 2 - Prob. 71GP Ch. 2 - Prob. 72GP Ch. 2 - Prob. 73GP Ch. 2 - Prob. 74GP Ch. 2 - Prob. 75GP Ch. 2 - Prob. 76GP Ch. 2 - Prob. 77GP Ch. 2 - Prob. 78GP Ch. 2 - Prob. 79GP Ch. 2 - Prob. 80GP Ch. 2 - Prob. 81GP Ch. 2 - Prob. 82GP Ch. 2 - Prob. 83GP Ch. 2 - Prob. 84GP Ch. 2 - Prob. 85GP

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